Step 27: Connecting Door Arm to Door
Door Mounted Bracket
Visually align cushion arm connecting hole with middle hole of door bracket by rotating tube section in appropriate direction.
Release trolley (cushion arm attached) with manual release cord and pull trolley a few inches toward motor. Now rotate cushion arm tube section 2 turns counterclockwise to provide a cushion when door is closed or encounters an obstruction. Align connecting hole in cushion arm to middle hole in
door bracket; insert 3/8” dia. bolt and tighten locking nut, allowing for free pivoting of arm.
Note: Do not over tighten locking nut, as this will cause binding between cushion arm and door bracket.
Step 28: Setting Door Close Travel Plus “Contact Obstruction Sensing” Test
With wall control up/down button, activate door to full open position; reactivate to close position. The door should stop on the floor with the cushion arm and the bottom door seal slightly compressed. If the door reverses off the floor, turn close travel knob 1/4 turn “less”. If door is not completely closed, turn travel knob 1/4 turn “more”. Repeat if necessary.
IMPORTANT! Test “Contact Obstruction Sensing Feature”
After installing opener, the door must reverse when it contacts a 1 inch high object on the floor
Activate the door to the full, open position and place a 1” (25mm) solid test obstacle on the floor under the garage door. Activate the door to the closed position. The door should reverse upon contact with the 1” obstacle.
If door stops on the 1” obstacle, adjust the close travel knob 1/4 turn “more” until door reverses upon contact with obstacle. Repeat if necessary.
When the door reverses, remove the test object and run the full cycle of open and close of the door. Door should not re- verse when it comes to the fully closed position.
Note: If opener fails to pass this test, repeat Step 28. Also see Adjustment #2, page 22, (Contact Obstruction Sensing Adjustment).
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